BEGIN TRANSACTION is your friend

I just love how the other person immediately knew there could be a difference between the left and the right USB port.

It is easy to cook up your own IM protocol, but for interoperability between providers (which is the whole point of using XMPP or Matrix in the first place!) we need to agree on a protocol. The way we agree on protocols is standardization. XMPP is the proper IETF internet standard for instant messaging while Matrix is effectively just another product by some startup with lots of venture capital funding for shiny clients and marketing.

Also, XMPP servers and clients are also a lot less bloated.

Mit dem Bus nach Hause fahren.

You forget about the first part of the quote: "and you can fool some people all of the time..."

Most users care more about contact discovery than privacy so it makes sense for them to implement it and unlike Signal, it uses #xmpp so everyone has the freedom to use any other app that doesn't require a phone number and you are still able communicate with everyone on Prav.

This looks like a SMBC before coloring.